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Khóa học miễn phí OrientDB – Sequences nhận dự án làm có lương

OrientDB – Sequences Sequences is a concept used in auto increment mechanism and it is introduced in OrientDB v2.2. In database terminology, sequence is a structure that manages the counter field. Simply said sequences are mostly used when you need a number that always increments. It supports two types− ORDERED − Each time the pointer […]

Khóa học miễn phí OrientDB – Drop Property nhận dự án làm có lương

OrientDB – Drop Property The Drop property command removes the property from the schema. It does not remove the property values from the record, it just change the schema. The following statement is the basic syntax of Drop Property Command. DROP PROPERTY <class>.<property> [FORCE] Following are the details about the options in the above syntax. […]